Comparison

Calibre Biometrics vs Forva

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calibre Biometrics

This app pairs with a wearable device to track and analyze key metabolic and performance metrics like VO2 Max and resting metabolic rate. It provides detailed insights into your body's energy expenditure and fat burning zones. Designed for informational and educational use, it complements professional health guidance.

Highlights
  • View biometric data
  • Record metabolic information
  • Analyze VO2 Max
  • Monitor Resting Metabolic Rate
  • Track FatMax and Calories
  • Companion to wearable tracker
Read full description

The companion app to the Calibre™ wearable breath/metabolic tracker allows you to view, record and analyze the rich biometric information obtained by the Calibre device. A device with groundbreaking accuracy for measuring and monitoring VO2 Max, Resting Metabolic Rate, FatMax, Calories and more with a lightweight, portable device that is simple and easy to use. Disclaimer Calibre is intended for informational and educational purposes only and should not be used as a substitute for professional medical advice or devices.

About

Forva

Features
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Losing weight fast? Make sure you're not losing muscle with it. When weight drops quickly — especially on GLP-1 medications like Wegovy, Zepbound, Ozempic, or Mounjaro — up to 40% of what you lose can be muscle. Forva structures your nutrition and training day by day to prevent that. HOW IT WORKS Tell Forva your goals, schedule, and preferences. It builds a weekly plan — meals and workouts — that adapts as your body changes. Log your meals, track your weight, and Forva recalibrates your protein targets, training intensity, and recovery in real time. • Chat naturally to log meals, report workouts, or ask questions • Tap "Plan Week" to generate a full schedule tailored to your day • Accept, tweak, or decline each suggestion — you're always in control SMART NUTRITION Forva sets daily protein and calorie targets based on your current weight, age, body composition, and fitness level — then adjusts them automatically as you progress. It plans meals around your actual schedule — not generic templates — and accounts for training days, rest days, and GLP-1 side effects like nausea or reduced appetite. TRAINING THAT FITS YOUR LIFE Whether you play pickleball, lift weights, run, or do yoga, Forva builds around what you already do. It respects your availability, alternates muscle groups, schedules recovery, and scales intensity based on how you're feeling. GLP-1 AWARE If you're on a GLP-1 medication, Forva tracks your dose schedule and side effects. On high-nausea days, it suggests smaller, more frequent meals. As side effects ease, portions adjust back up. Your prescribing doctor always comes first — Forva helps you execute on the nutrition side. YOUR DATA STAYS ANONYMOUS Forva never asks for your name. Your email and account identity are stripped before any data is sent to the AI — it sees only your goals, nutrition, and training, never who you are. All health data is encrypted at rest with AES-256. No ads, no data selling, no third-party sharing. WHAT'S INCLUDED Free tier: • Full access to meal and workout planning • Daily check-ins, weight tracking, and progress charts • Limited AI coaching credits (~2 weeks of use) Forva Pro ($4.99/month or $29.99/year): • Unlimited AI coaching • Ongoing plan adjustments as your body changes Manual features like logging, calendar, and check-ins are always free. Forva Pro auto-renews at the end of each billing period unless cancelled at least 24 hours before. Manage your subscription in your Apple ID account settings. Payment is charged to your Apple ID at confirmation of purchase. IMPORTANT Forva is not medical advice. AI can make mistakes — always review recommendations. If you take medication, follow your prescribing doctor's guidance first. Privacy Policy: https://forva.health/privacy Terms of Use: https://forva.health/terms

Screenshots

Calibre Biometrics4 screens
Forva4 screens

Verdict

The call

Calibre Biometrics and Forva are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calibre Biometrics sells 1 in-app purchase, starting at $7.99 per month and Forva sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Calibre Biometrics versus Forva: the parameters behind the verdict, then further details
ParameterCalibre BiometricsForva
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.415.0 — better
Further details — not scored
Size116 MB2 MB
Age rating4+12+
DeveloperBreathTaking Tech LLCItekubus

In-app purchases

1 purchases

Calibre Biometrics

Subscriptions1
  • Calibre Premium$7.991 Month
2 purchases

Forva

Subscriptions2
  • Forva Pro$4.991 Month
  • Forva Pro (Yearly)$29.991 Year

Questions

Is Calibre Biometrics free?
Calibre Biometrics is free to download, with in-app purchases available.
Is Forva free?
Forva is free to download, with in-app purchases available.
Do Calibre Biometrics or Forva have ads?
Neither Calibre Biometrics nor Forva shows ads.

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